148 ANIMAL ECOLOGY 



small stream ; a census rather than an ecological 

 study. 



McCEEABY, O. 



1909. The Ecological Distribution of the Birds of Isle Royale, 



Lake Superior. Ann. Rep. Mich. Geol. Surv. for 

 1908, pp. 81-95. 

 Habitat preferences of birds. 

 MORSE, A. P. 



1904. Researches on North American Acridiidae. Carnegie 



Inst., Pub. 18. pp. 55. 



Associational groupings of the short-horned grass- 

 hoppers, with figures of habitats. 



RUTHVEN, A. G. 



1907. A Collection of Reptiles and Amphibians from Southern 

 New Mexico and Arizona. Bull. Amer. Mus. Nat. 

 Hist., Vol. XXin, pp. 483-603. 



Discusses the associations, habitats, and food of the 

 desert species. 



SCOTT, W. 



1910. The Fauna of a Solution Pond. Proc. Ind. Acad. 



Science for 1910, pp. 395-442. 

 Includes a discussion of their interrelations. 



SlMROTH, H. 



1891. Die Entstehung der Landtiere. Ein Biologische 

 Versuch. pp. 492. Leipzig. 



STEUER, A. 



1910. Planktonkunde. pp. 723. Leipzig. 



A general treatise on plankton. 



WATSON, J. R. 



1911. A Contribution to the Study of the Ecological Distri- 



bution of the Animal Life of North Central New 

 Mexico with Especial Attention to the Insects. First 

 Ann. Rep. New Mexico Nat. Resource and Conserv. 

 Comm., pp. 67-117. 



